Harlequins' potentially decisive Amlin Challenge Cup round 6 clash with Bayonne will take place at the Stoop on Saturday January 22.

The match is set to be a winner-takes-all clash that will decide which side progresses from Pool 1 to the Amlin Cup quarter. An evening kick off of 6pm has been decided after tournament organisers European Rugby Cup announced the dates for the latter stages of the competition.

Agen and La Rochelle will signal the resumption of the tournament when they clash in an all-French Pool 5 contest at Stade Alfred Armandie on Thursday, January 13.

The two matches in each Pool will kick-off simultaneously in round 6 with the Pool 4 matches between Leeds Carnegie against Bucharest Oaks and Crociati Rugby against Stade Français Paris bringing the curtain down on the Pool stages of the tournament.